package controller;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.StringTokenizer;
import java.util.regex.Pattern;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import models.Domain;

import com.googlecode.objectify.Objectify;
import com.googlecode.objectify.ObjectifyService;
import com.googlecode.objectify.Query;

@SuppressWarnings("serial")
public class DomainSameIpServlet extends HttpServlet {
	public void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws IOException {
		
		resp.setCharacterEncoding("utf-8");
		String path = ((HttpServletRequest)req).getRequestURI();
		StringTokenizer st = new StringTokenizer( path,"/");
        int count = st.countTokens(); 

        if(count != 2)
        {
        	try {
				req.getRequestDispatcher("/404error.jsp").forward(req, resp);
			} catch (Exception e) {
				e.printStackTrace();
			}
        	return;
        }
        
		// skip one token /question/abcd (remove sites)
		st.nextToken();
		String title_url = st.nextToken();

		if(title_url!=null&&Pattern.matches("^[0-9]{1,3}[.]{1}[0-9]{1,3}[.]{1}[0-9]{1,3}[.]{1}[0-9]{1,3}$", title_url))
		{
			try {
				ObjectifyService.register(Domain.class);
			} catch (Exception e) {
				// TODO: handle exception
			}
			Objectify objectify = ObjectifyService.begin();
			try {
				Query<Domain> list = objectify.query(Domain.class).filter("ip", title_url).limit(20);
	
				resp.setHeader( "Cache-Control", "public, max-age=86400");
				resp.setHeader( "Expires", new Date(Calendar.getInstance().getTime().getTime()+24*60*60*1000).toGMTString());
				
				req.setAttribute("list", list);
				req.setAttribute("ip", title_url);
			} catch (Exception e) {
				try {
					req.getRequestDispatcher("/404error.jsp").forward(req, resp);
				} catch (Exception e1) {
					e.printStackTrace();
				}
	        	return;
			}
			
			try {
				req.getRequestDispatcher("/same_ip.jsp").forward(req, resp);
			} catch (Exception e) {
				e.printStackTrace();
			}
		} else {
			try {
				req.getRequestDispatcher("/404error.jsp").forward(req, resp);
			} catch (Exception e) {
				e.printStackTrace();
			}
        	return;
		}
	}

}
